js 实现键盘监听

jopen 4年前
<html>   <head>   <script type="text/javascript" language=JavaScript charset="UTF-8">          document.onkeydown=function(event){                var e = event || window.event || arguments.callee.caller.arguments[0];                if(e && e.keyCode==27){ // 按 Esc                     //要做的事情   alert("按 esc");                  }                if(e && e.keyCode==113){ // 按 F2                      //要做的事情   alert("按 f2");                   }                             if(e && e.keyCode==13){ // enter 键                     //要做的事情   alert("按 Enter");                }            };     </script>   </head>   <body>     </body>     </html>                             js 里面的键盘事件经常用到,所以收集了键盘事件对应的键码来分享下:  keyCode 8 = BackSpace BackSpace  keyCode 9 = Tab Tab  keyCode 12 = Clear  keyCode 13 = Enter  keyCode 16 = Shift_L  keyCode 17 = Control_L  keyCode 18 = Alt_L  keyCode 19 = Pause  keyCode 20 = Caps_Lock  keyCode 27 = Escape Escape  keyCode 32 = space  keyCode 33 = Prior  keyCode 34 = Next  keyCode 35 = End  keyCode 36 = Home  keyCode 37 = Left  keyCode 38 = Up  keyCode 39 = Right  keyCode 40 = Down  keyCode 41 = Select  keyCode 42 = Print  keyCode 43 = Execute  keyCode 45 = Insert  keyCode 46 = Delete  keyCode 47 = Help  keyCode 48 = 0 equal braceright  keyCode 49 = 1 exclam onesuperior  keyCode 50 = 2 quotedbl twosuperior  keyCode 51 = 3 section threesuperior  keyCode 52 = 4 dollar  keyCode 53 = 5 percent  keyCode 54 = 6 ampersand  keyCode 55 = 7 slash braceleft  keyCode 56 = 8 parenleft bracketleft  keyCode 57 = 9 parenright bracketright  keyCode 65 = a A  keyCode 66 = b B  keyCode 67 = c C  keyCode 68 = d D  keyCode 69 = e E EuroSign  keyCode 70 = f F  keyCode 71 = g G  keyCode 72 = h H  keyCode 73 = i I  keyCode 74 = j J  keyCode 75 = k K  keyCode 76 = l L  keyCode 77 = m M mu  keyCode 78 = n N  keyCode 79 = o O  keyCode 80 = p P  keyCode 81 = q Q at  keyCode 82 = r R  keyCode 83 = s S  keyCode 84 = t T  keyCode 85 = u U  keyCode 86 = v V  keyCode 87 = w W  keyCode 88 = x X  keyCode 89 = y Y  keyCode 90 = z Z  keyCode 96 = KP_0 KP_0  keyCode 97 = KP_1 KP_1  keyCode 98 = KP_2 KP_2  keyCode 99 = KP_3 KP_3  keyCode 100 = KP_4 KP_4  keyCode 101 = KP_5 KP_5  keyCode 102 = KP_6 KP_6  keyCode 103 = KP_7 KP_7  keyCode 104 = KP_8 KP_8  keyCode 105 = KP_9 KP_9  keyCode 106 = KP_Multiply KP_Multiply  keyCode 107 = KP_Add KP_Add  keyCode 108 = KP_Separator KP_Separator  keyCode 109 = KP_Subtract KP_Subtract  keyCode 110 = KP_Decimal KP_Decimal  keyCode 111 = KP_Divide KP_Divide  keyCode 112 = F1  keyCode 113 = F2  keyCode 114 = F3  keyCode 115 = F4  keyCode 116 = F5  keyCode 117 = F6  keyCode 118 = F7  keyCode 119 = F8  keyCode 120 = F9  keyCode 121 = F10  keyCode 122 = F11  keyCode 123 = F12  keyCode 124 = F13  keyCode 125 = F14  keyCode 126 = F15  keyCode 127 = F16  keyCode 128 = F17  keyCode 129 = F18  keyCode 130 = F19  keyCode 131 = F20  keyCode 132 = F21  keyCode 133 = F22  keyCode 134 = F23  keyCode 135 = F24  keyCode 136 = Num_Lock  keyCode 137 = Scroll_Lock  keyCode 187 = acute grave  keyCode 188 = comma semicolon  keyCode 189 = minus underscore  keyCode 190 = period colon  keyCode 192 = numbersign apostrophe  keyCode 210 = plusminus hyphen macron  keyCode 211 =  keyCode 212 = copyright registered  keyCode 213 = guillemotleft guillemotright  keyCode 214 = masculine ordfeminine  keyCode 215 = ae AE  keyCode 216 = cent yen  keyCode 217 = questiondown exclamdown  keyCode 218 = onequarter onehalf threequarters  keyCode 220 = less greater bar  keyCode 221 = plus asterisk asciitilde  keyCode 227 = multiply division  keyCode 228 = acircumflex Acircumflex  keyCode 229 = ecircumflex Ecircumflex  keyCode 230 = icircumflex Icircumflex  keyCode 231 = ocircumflex Ocircumflex  keyCode 232 = ucircumflex Ucircumflex  keyCode 233 = ntilde Ntilde  keyCode 234 = yacute Yacute  keyCode 235 = oslash Ooblique  keyCode 236 = aring Aring  keyCode 237 = ccedilla Ccedilla  keyCode 238 = thorn THORN  keyCode 239 = eth ETH  keyCode 240 = diaeresis cedilla currency  keyCode 241 = agrave Agrave atilde Atilde  keyCode 242 = egrave Egrave  keyCode 243 = igrave Igrave  keyCode 244 = ograve Ograve otilde Otilde  keyCode 245 = ugrave Ugrave  keyCode 246 = adiaeresis Adiaeresis  keyCode 247 = ediaeresis Ediaeresis  keyCode 248 = idiaeresis Idiaeresis  keyCode 249 = odiaeresis Odiaeresis  keyCode 250 = udiaeresis Udiaeresis  keyCode 251 = ssharp question backslash  keyCode 252 = asciicircum degree  keyCode 253 = 3 sterling  keyCode 254 = Mode_switch  使用event对象的keyCode属性判断输入的键值  eg:if(event.keyCode==13)alert(“enter!”);  键值对应表  A  0X65  U   0X85  B  0X66  V   0X86  C  0X67  W   0X87  D  0X68  X   0X88  E  0X69  Y   0X89  F  0X70  Z   0X90  G  0X71  0   0X48  H  0X72  1   0X49  I  0X73  2   0X50  J  0X74  3   0X51  K  0X75  4   0X52  L  0X76  5   0X53  M  0X77  6   0X54  N  0X78  7   0X55  O  0X79  8   0X56  P  0X80  9   0X57  Q  0X81 ESC  0X1B  R  0X82 CTRL  0X11  S  0X83 SHIFT 0X10  T  0X84 ENTER 0XD  如果要使用组合键,则可以判断是否同时按下了这几个键,比如ctrl键、shift键以及alt键的组合使用就可以判断是否多按下了ctrl键、shift键以及alt键